Establish the formula for intensity of magnetic field at the centre of a current carrying circular coil.
![In a material, the magnetic field intensity is H = 1200 A/m when B = 2 Wb/m2. When H is reduced to 400 A/m, B = 1.4 Wb/m2. What change in the In a material, the magnetic field intensity is H = 1200 A/m when B = 2 Wb/m2. When H is reduced to 400 A/m, B = 1.4 Wb/m2. What change in the](https://www.learnpick.in/userfiles/askaquestion/askanswerimage/25521_64446_1506088450.jpg)
In a material, the magnetic field intensity is H = 1200 A/m when B = 2 Wb/m2. When H is reduced to 400 A/m, B = 1.4 Wb/m2. What change in the
![electromagnetic - Can I increase range of a near field magnetic inductor from 10cm to 100cm by increasing radius of ferrite rod coil by 30 times? - Electrical Engineering Stack Exchange electromagnetic - Can I increase range of a near field magnetic inductor from 10cm to 100cm by increasing radius of ferrite rod coil by 30 times? - Electrical Engineering Stack Exchange](https://i.imgur.com/vncEeeS.png)
electromagnetic - Can I increase range of a near field magnetic inductor from 10cm to 100cm by increasing radius of ferrite rod coil by 30 times? - Electrical Engineering Stack Exchange
![Please explain what is amplitude of magnetic field intensity and how we get its formula - Physics - - 16236665 | Meritnation.com Please explain what is amplitude of magnetic field intensity and how we get its formula - Physics - - 16236665 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_5fa79b643ff36.png)